diff --git a/llvm/lib/CodeGen/ComplexDeinterleavingPass.cpp b/llvm/lib/CodeGen/ComplexDeinterleavingPass.cpp
--- a/llvm/lib/CodeGen/ComplexDeinterleavingPass.cpp
+++ b/llvm/lib/CodeGen/ComplexDeinterleavingPass.cpp
@@ -918,13 +918,13 @@
 
   switch (I->getOpcode()) {
   case Instruction::FNeg:
-    return B.CreateFNeg(InputA);
+    return B.CreateFNegFMF(InputA, I);
   case Instruction::FAdd:
-    return B.CreateFAdd(InputA, InputB);
+    return B.CreateFAddFMF(InputA, InputB, I);
   case Instruction::FSub:
-    return B.CreateFSub(InputA, InputB);
+    return B.CreateFSubFMF(InputA, InputB, I);
   case Instruction::FMul:
-    return B.CreateFMul(InputA, InputB);
+    return B.CreateFMulFMF(InputA, InputB, I);
   }
 
   return nullptr;
diff --git a/llvm/test/CodeGen/AArch64/complex-deinterleaving-mixed-cases.ll b/llvm/test/CodeGen/AArch64/complex-deinterleaving-mixed-cases.ll
--- a/llvm/test/CodeGen/AArch64/complex-deinterleaving-mixed-cases.ll
+++ b/llvm/test/CodeGen/AArch64/complex-deinterleaving-mixed-cases.ll
@@ -358,10 +358,9 @@
 define <4 x float> @mul_addequal(<4 x float> %a, <4 x float> %b, <4 x float> %c) {
 ; CHECK-LABEL: mul_addequal:
 ; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    movi v3.2d, #0000000000000000
-; CHECK-NEXT:    fcmla v3.4s, v0.4s, v1.4s, #0
-; CHECK-NEXT:    fcmla v3.4s, v0.4s, v1.4s, #90
-; CHECK-NEXT:    fadd v0.4s, v3.4s, v2.4s
+; CHECK-NEXT:    fcmla v2.4s, v0.4s, v1.4s, #0
+; CHECK-NEXT:    fcmla v2.4s, v0.4s, v1.4s, #90
+; CHECK-NEXT:    mov v0.16b, v2.16b
 ; CHECK-NEXT:    ret
 entry:
   %strided.vec = shufflevector <4 x float> %a, <4 x float> poison, <2 x i32> <i32 0, i32 2>